Improvement in stove-pipe thimbles



tiene @anni itis.

JOHN L. LITTLE; OF ATKINSON, NEW HAMPSHIRE."

Letters Patent No. 8-3,646,dated N cve/mbar 3, 1868.

IMPROVMIENT IN STOvE-PIPE THIIMBLES.

The Schedule referred to in these Letters Patent and making part of the same.

To all 'whomt't 'ma/y concern Be it known that I, JOHN L. LITTLE, of Atkinson, county of Rockingham, and State of NewHampshire, have invented a new and useful Improvement in Stove- Pipe 'Thimbles and Collars; and I do declare that the 'following isa full, clear, and exact description of ,the

same,'refer.e`nce being had to the annexed drawings,

forming a part of this specification, in which, in

`liligure l, A represents a perspective view of my improved stove-pipe thimble and collar;

Figure 2 is a perspective view of, my improved collar', showing rim R furnished with T-'shaped slots, S S. 'Figure 3 represents a'front view of ventilating-cover. Figure 4 represents a full-size sectional view of my entire device, the line c c, fig. 1, indicating plane of Similar letters of reference inthe several figures indicate corresponding parts. r i

The object and purpose of this invention are to furnish acheap and ecient stove-pipe thimble, whereby stove-pipes of v ious sizes may be safely conducted, not only into b1' k chimneys, but also through partitions wholly of wood, when necessary, and also to furnish, when desired, a convenient and effective ventilator for the apartment in which it is used.'

And it consists of a stove-pipe thimble, with the parts constructedin such way as that several sizes of stovepipes may be used in the same thimble by the lremoval and insertion of diii'erent collars, having diiierent-sized openings for the stovefpipe.-

To enable those skilled in the arts to make and use my invention, I will nowproceed to describe it.

The cylinder, A, iig. 1, is made ofcastiron,oneeighth of aninch in thickness, sixl and a half inches interior diameter, andfrom four to six inches in length, and furnished with projections P P, shown in g. 4.

OollarO, g. 2, is constructed with a projecting rim, R, of about three-eighths of an inch in depth, the outside diameter of said rim corresponding to the inside diameter of cylinder A A, iig. 4. When the collar G 'O is applied tothe cylinder A as shownin figs. 1

' and 4, the slots S S, in rim R, fig. 2, allow the passage of projections P P, fig. 4, until' the collar is brought home against the end ofthe cylinder, then a slightturn in either direction securesthe collar iirmly in its place. The interior diameter of collar O C being always less than the-interior diameter of cylinder A A, there will always be more or less Aair-space between the heated stove-pipe F F and the interior of the thimble, thus preventing the communication of heat om the stovepipe to the partition.

Fig, 3 is a front" view of a cover, furnished with a vT-slotted rim, as shown in fig. 2, and also witha ventilating-registe'r, V, to be used, when the stove is removed, in place of the ordinary cover, when it is de sirable to ventilate the apartment in which it is used.

Fig. 4 is a horizontal sectional view of my improved thimble and collar, full size, the line c a, iig. 1, indieating plane of section. A A are the cylinder, with the inward'projections P AP, which serve to confine collar- C C in its proper place; It R, slotted lim; lF F, veinch stove-pipe. The air-spaces, brick and lwood surroundings, are -indicated by words on the drawing.

e I am aware 'that chimneys are made in'section s, which sections are secured and held in place by means of what is termed a bayonet-catch. I am also aware that such device is extensively used in attaching the bottoms of lanterns to their tops. Such construction-of means for holdin'g'two sections ofcylinder together I do not claim, as I limit my invention to the construe tion of, and its adaptation to stove-pipe thimbles.

Having thus fully d escribed my invention,

What I claim, and desire to secure by Letters Pat- 

